In England, 265 new measles infections were confirmed in the first quarter of 2018
compared to 149 in the period between October and December 2017

In this quarter there has been a relative increase in confirmed cases amongst adults with 42% confirmed cases in adults aged 20 years and above compared with 19% in the previous quarter. 11% confirmed cases occurred in infants under the age of 1; this is higher than the 7% reported in the previous quarter. The hospitalisation rate remains high at 36%, although lower than the previous quarter (45%).

Laboratory confirmed cases of measles by month of onset ofrash/symptoms reported, London and England: January 2014 to March 2018

An increase in mumps activity in England was observed this quarter with 275 laboratory confirmed mumps infections compared to the 160 the previous quarter, in line with usual seasonal trends and similar to levels observed in quarter 1 of 2017

Mumps cases were reported in all regions of England predominantly in young
adults aged 15 to 24 years